Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Brand | Bekome |
| Model Number | BK-SM01 |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Digital (DO) and Analog (AO) |
| Detection Range | 0% - 100% Moisture Level |
| Interface | 3-Pin PH2.0 Connector |
| PCB Dimensions | 32mm x 14mm |
| Probe Length | 40mm |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
| Application | Smart Agriculture, Robot Cars, Garden Monitoring |
Anonymous
Mar 28, 2026
Rating: 4/5
Works well but needs careful wiring
The sensor functions perfectly once wired correctly. Make sure to double-check your VCC and GND connections. The sensitivity adjustment screw is a nice touch for fine-tuning thresholds.
Anonymous
Mar 27, 2026
Rating: 4/5
Good value, easy to calibrate
Great little module for the price. Calibration was straightforward using the onboard potentiometer. Only giving 4 stars because the probe coating could be slightly more durable for long-term outdoor use.
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect for my Arduino robot car project
This sensor works exactly as described. I integrated it into my smart robot car to detect wet surfaces, and the digital output is very responsive. The analog pin also allows for precise moisture level reading in soil tests.
Anonymous
Mar 18, 2026
Rating: 5/5
Compact and efficient
Small form factor fits perfectly into tight spaces on my custom PCB. The response time is quick, making it ideal for real-time monitoring applications in smart gardening systems.
Anonymous
Mar 06, 2026
Rating: 5/5
Reliable detection module
I've tested several soil sensors, and this Bekome model offers the best stability. No erratic readings even when the soil moisture changes gradually. Highly recommended for automation projects.
Anonymous
Mar 02, 2026
Rating: 5/5
Essential for school robotics kit
Bought this for a high school engineering project. It connected easily to our microcontroller and provided consistent data. The documentation included in the package was helpful for beginners.
Q: Can this sensor be used directly with a 5V Arduino Uno?
A: Yes, this module operates within the 3.3V to 5V range, so it is fully compatible with the Arduino Uno without needing a logic level converter.
Q: Can I use this to detect water leaks on a floor?
A: Yes, while designed for soil, the conductivity principle works for detecting standing water on floors or in trays for leak detection systems.
Q: Is the probe resistant to corrosion over time?
A: The probes have a nickel plating to improve conductivity and reduce corrosion, but for long-term permanent installation in soil, we recommend applying a conformal coating or checking them periodically.
Q: What is the difference between the DO and AO pins?
A: The DO (Digital Output) pin provides a simple HIGH/LOW signal based on a threshold you set with the potentiometer. The AO (Analog Output) pin provides a continuous voltage value proportional to the moisture level.
Q: Does this come with jumper wires?
A: The package includes the sensor module only. Jumper wires are not included, but standard 3-pin Dupont wires will fit the connector perfectly.
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